/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  --color-bg:          #0d0d0f;
  --color-bg-alt:      #111114;
  --color-surface:     rgba(255, 255, 255, 0.04);
  --color-border:      rgba(255, 255, 255, 0.08);
  --color-primary:     #6c63ff;
  --color-primary-alt: #8b84ff;
  --color-accent:      #ff6584;
  --color-text:        #e2e2e8;
  --color-text-muted:  #888899;
  --gradient-primary:  linear-gradient(135deg, #6c63ff 0%, #a855f7 100%);
  --gradient-hero:     radial-gradient(ellipse at 60% 50%, rgba(108,99,255,.18) 0%, transparent 60%),
                       radial-gradient(ellipse at 20% 80%, rgba(168,85,247,.12) 0%, transparent 50%);
  --font-sans:         'Inter', system-ui, -apple-system, sans-serif;
  --radius-sm:         8px;
  --radius-md:         14px;
  --radius-lg:         22px;
  --shadow-card:       0 8px 32px rgba(0, 0, 0, 0.4);
  --transition:        0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height:        70px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--color-primary-alt); text-decoration: none; }
ul { list-style: none; }

.container {
  width: min(1160px, 92vw);
  margin-inline: auto;
}

.section { padding: 100px 0; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.section__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: #fff;
}

.section__title span { color: var(--color-primary-alt); }

.section__subtitle {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 3.5rem;
}

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-align: center;
}

.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.35);
}

.btn--primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 28px rgba(108, 99, 255, 0.55);
  transform: translateY(-2px);
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: var(--color-primary-alt);
  border: 1.5px solid var(--color-primary);
}

.btn--outline:hover {
  background: rgba(108, 99, 255, 0.12);
  transform: translateY(-2px);
}

.btn--full { width: 100%; justify-content: center; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(13, 13, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(13, 13, 15, 0.96);
}

.navbar__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.04em;
}

.navbar__logo span { color: var(--color-primary-alt); }

.navbar__links {
  display: flex;
  gap: 2.5rem;
}

.navbar__links a {
  color: var(--color-text-muted);
  font-size: 0.93rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width var(--transition);
}

.navbar__links a:hover,
.navbar__links a.active {
  color: #fff;
}

.navbar__links a:hover::after,
.navbar__links a.active::after {
  width: 100%;
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero__bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--gradient-hero);
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
}

.shape--1 {
  width: 600px;
  height: 600px;
  background: var(--color-primary);
  top: -200px;
  right: -150px;
  animation: float 8s ease-in-out infinite;
}

.shape--2 {
  width: 400px;
  height: 400px;
  background: #a855f7;
  bottom: -100px;
  left: -100px;
  animation: float 10s ease-in-out infinite reverse;
}

.shape--3 {
  width: 300px;
  height: 300px;
  background: var(--color-accent);
  top: 40%;
  left: 50%;
  animation: float 12s ease-in-out infinite 2s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -30px) scale(1.05); }
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero__greeting {
  font-size: 1.1rem;
  color: var(--color-primary-alt);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.hero__name {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: #fff;
  margin-bottom: 0.5rem;
}

.hero__role {
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 600;
  color: transparent;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  margin-bottom: 1.5rem;
  min-height: 1.4em;
}

.typed::after {
  content: '|';
  animation: blink 0.8s infinite;
  color: var(--color-primary-alt);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero__bio {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  max-width: 560px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero__scroll {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-border);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary-alt);
  border-radius: 2px;
  animation: scroll-dot 2s ease-in-out infinite;
}

@keyframes scroll-dot {
  0%, 100% { top: 6px; opacity: 1; }
  80% { top: 18px; opacity: 0; }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background: var(--color-bg-alt);
}

.about__grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 5rem;
  align-items: center;
}

.about__avatar {
  display: flex;
  justify-content: center;
}

.avatar-wrapper {
  position: relative;
  width: 240px;
  height: 240px;
}

.avatar-glow {
  position: absolute;
  inset: -20px;
  background: var(--gradient-primary);
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.35;
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.35; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(1.05); }
}

.avatar-initials {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  border: 3px solid rgba(255, 255, 255, 0.1);
}

.about__text p {
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.about__stats {
  display: flex;
  gap: 2.5rem;
  margin: 2rem 0;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat__number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary-alt);
  line-height: 1;
}

.stat__label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.skill-card:hover {
  transform: translateY(-6px);
  border-color: rgba(108, 99, 255, 0.3);
  box-shadow: var(--shadow-card);
}

.skill-card__icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.skill-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.25rem;
}

.skill-card ul { display: flex; flex-direction: column; gap: 0.9rem; }

.skill-card li {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.skill-card li span {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.bar {
  height: 5px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  overflow: hidden;
}

.bar__fill {
  height: 100%;
  width: 0;
  background: var(--gradient-primary);
  border-radius: 10px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects { background: var(--color-bg-alt); }

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(108, 99, 255, 0.35);
  box-shadow: var(--shadow-card);
}

.project-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-card__icon { font-size: 2rem; }

.project-card__links {
  display: flex;
  gap: 0.75rem;
}

.project-card__links a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.project-card__links a:hover {
  color: var(--color-primary-alt);
  background: rgba(108, 99, 255, 0.15);
}

.project-card__links svg { width: 16px; height: 16px; }

.project-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
}

.project-card__desc {
  color: var(--color-text-muted);
  font-size: 0.93rem;
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-card__tags span {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  background: rgba(108, 99, 255, 0.12);
  color: var(--color-primary-alt);
  border-radius: 100px;
  border: 1px solid rgba(108, 99, 255, 0.2);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.contact__item-icon {
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__item h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact__item a {
  color: var(--color-text);
  font-size: 0.95rem;
  transition: color var(--transition);
}

.contact__item a:hover { color: var(--color-primary-alt); }

/* Form */
.contact__form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255, 255, 255, 0.2); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}

.form-status {
  font-size: 0.9rem;
  text-align: center;
  min-height: 1.2em;
  transition: color var(--transition);
}

.form-status.success { color: #4ade80; }
.form-status.error   { color: var(--color-accent); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer p { color: var(--color-text-muted); font-size: 0.9rem; }

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

.footer__links a:hover { color: var(--color-primary-alt); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .skills__grid { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: 1fr; }
  .about__grid { grid-template-columns: 1fr; gap: 3rem; }
  .contact__grid { grid-template-columns: 1fr; gap: 3rem; }
  .avatar-wrapper { width: 180px; height: 180px; }
}

@media (max-width: 640px) {
  .navbar__links { display: none; }
  .navbar__links.open {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(13, 13, 15, 0.97);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
  }
  .navbar__links.open a {
    padding: 0.85rem 1.5rem;
    display: block;
  }
  .navbar__toggle { display: flex; }
  .hero__cta { flex-direction: column; }
  .hide-mobile { display: none; }
  .about__stats { gap: 1.5rem; }
  .section { padding: 70px 0; }
}